Operation
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CAUTION - RISK OF MEASURING ERRORS
The wearing of rigid or soft contact lenses may have an effect on the
surface geometry of the cornea and thus the optical state of the eye.
For topography and wavefront measurement of wearers of soft lenses a
rest period of at least two weeks should thus be observed from the time the
lens is removed to the time of measurement.
For wearers of rigid lenses the time from removal of the lens to the time of
measurement should be at least three weeks. Two measurements must be
made of the central keratometry and two of the manifest refraction at an
interval of at least one week. These may not diverge from each other by
more than 0.5 D for each meridian. The Placido ring images must be
normal.
•
Explain to the patient that measurements with the i.Profiler
® plus
are
contactless.
•
Prior to performing measurements, inform the patient about the
procedure (appearance of a red light).
•
Watch out for foreign bodies in the tear film (e.g. eyelashes). Ask the
patient to blink once or twice before starting the measurement
procedure.
